Curb-block.



W. WEIS.

CURB BLCK.

APPLICATION FILED 050.1.-1916.

Patented Jun@ 18, 1916 5 Zz 3 u@ l@ wfe www u a m m mm' Ey wir wrnrrninwins', orrnnnnru, rarnnnso'rn. A

CURB-BLOCK.

Specification of Letters Patent.

Patenten .nine ie, rais.

Application filed December l, 1916; -Sera11\]'o. 134,440.

To all whom it may concern Be it known that I, WILLIAM Wins, a citizenof the United States, residing at Perham, in the county of Ottertail andState of Minnesota, have invented certain new and useful Improvements inCurb-Blocks, of which the following is a specification.

My invention relates -to curb blocks for constructing wells and has forits object to provide a block which is formed with a recess extendingsubstantially throughout the length of the block for the purpose ofproviding a step by means of which ingress or egress from the well maybe had and which serves to make the block lighter,- thereby economizingin material without greatly reducing the strength of the block. A stillfurther object is to form the lower portion ofthe block so that anextended inclined surface is provided on which the whole foot may restin a comfortable position, said lower portion extending out beyond theinner surface of the block and sloping back to form a continuous surfacewith the upper portion of the block immediately below it.

'Ihe full objects and advantages of my invention will appear inconnection with the detailed description thereof and are particularlypointed out in the claim.

In the drawings, illustrating the application .of my invention in onecrm,-

Figure 1 is a perspective view of my improved curb block showing thestep. Fig. 2 is a plan view of a well with one of the blocks showninsection. Fig. 3 is a vertical sectional view of the well shown in Fig.2.

My improved curb block is preferably made of concrete and is formed insuitable molds constructed for the purpose. blocks may be made segmentalso that a number of blocks 10, of which I prefer to have four, will forma complete circular course, as is clearly shown in Fig. 2. rIhe ends 11and 12 of each block are rectangular, as shown in Fig. 2, being somewhathigher than wide. The inner surface 13 of each block is formed with arecess 14 extending substantially from one end of the block to the otherexcept for end portions 15 and 16, while the outer wall 17 and the topand bottom 118 and 119 are formed smooth. Recess 14 extends back intothe block about one-half of the thickness thereof and is bounded by avertical wall 18, two

sloping end walls 19 and 20, a curved roof 21 which meets surface 18substantially in a line and an inclined lower surface 22 of a ridge 23which extends beyond the inner surface 13 of the block proper and whichhas a surface 24: sloping back to meet the upper portion of the nextlower block and to form a continuous surface with the surface 21thereof.

In constructing wells a number of the blocks are piled in courses uponone another to break joints on the ground where the well is to be dug.'Ihe earth is then undermined beneath the blocks which causes the sameto sink and to form a lining within the shaft so dug which lining iscapable of resisting the pressure of the earth tending to cave the samein and which will not deteriorate with time. The lining may be installedwithin a wellpreviously constructed of wood or other material withoutthe recially desirable when water is struck and the operator cannotstand upon the ground to work but must remain supported upon the wallstructure. In climbing it will be found that with only four blocks tothe course and with a recess of considerable circumferential extent,that a succession of steps will be provided which are substantially onebelow the other even though the blocks are laid to break joints, thuspermitting the operator. to move straight up ward with the greatestease.

'Ihe advantages of my invention are manifest. The blocks can be easilymolded by a simple mold since a perfect draft is secured in any portionof the same. It will be noted that the block is formed with the majormass of the material at the bottom, which permits of proper setting ofthe cement without danger of the wall structure breaking down duringsetting, and also gives the block the greatest strength.

I claim:

A curb block for wells comprising a body portion having acircumferential de ression formed with an inclined lower sur ace and acurved wall extending from the top of the 'block inward toV the innerpart of the positioned below it to form :L regular condepression, and a`ridge formed along the tinuous surface therewith, lower portion of saidblock proj ectng out In testimony whereof I aiiiX my signature beyondthe same having a surface serving in presence of two witnesses.

5 as an extension of said inclined lower sur- WILLIAM WEIS.

- face of the body and also having an in- Witnesses:

wardly-sloping wall adapted to meet the A. S. BARRON,previously-mentioned wall of another block A. G. I-IENY.

Copies of thisfpatent may' be obtained for ve cents each, by addressingthe Commissioner of Patents,

' v Washington, D. 6.

